Add some stuff for NSEC3 testing later
Add some stuff for NSEC3 testing later

AdoHe/skydns,nicescale/skydns,yonglehou/skydns,skynetservices/skydns,ZeaLoVe/skydns,loveshell/skydns,tonicbupt/skydns,netf/skydns,zhang0137/skydns,erimatnor/skydns-kubernetes,zvelo/zvelo-skydns,tuannvm/skydns,smarterclayton/skydns,no2key/skydns,andrewrothstein/skydns,weekface/skydns,vinhhrv/skydns,hw-qiaolei/skydns